2.1-"Night Sky Observations"
2.2-"How Big and How Far?"
2.3-"Phases of the Moon"
2.4-"The Solar System"
2.5-"Stars"
100

It takes the Earth approximately 365 days (or one year) to do THIS around the sun.

What is ORBIT?

100

The Sun is brighter than the other stars in the sky because of this.

What is, "because it is so much closer to the Earth than other stars?"

100
The Moon appears to change shape throughout the month because it is slowly orbiting around THIS, giving us different views of the side that is being lit up by the sun.  

What is the Earth? 

100

Jupiter, Saturn, Uranus, and Neptune are this type of planet.  

What are GAS GIANTS?
100

This is the name of the galaxy we live in.  

What is the Milky Way galaxy?
200

It takes the Earth one day to rotate on this.  

What is its AXIS?

200

The Moon is about this much smaller than Earth.

What is 1/4 (one-fourth) the size of EARTH?

200

This word means the illuminated (lit up) part of the Moon is growing.

What is WAXING?

200

Mercury, Venus, Earth, and Mars are this type of planet.

What are TERRESTRIAL PLANETS?


200

This is the name for a group of stars that make an identifiable pattern.

What is a CONSTELLATION?

300

This Moon is brightest object in the night sky when it is visible because it reflects light from this.

What is the SUN?

300

238,900 miles is about how far the Earth is from this.

What is the MOON?

300

The gravitational pull of the Moon creates high and low THESE in our oceans.

What are TIDES?

300

This is the name of the force that holds Earth in orbit around the Sun AND pulls objects towards Earth's core.  

What is GRAVITY?
300
Earth's THIS around the Sun helps explain why we see different stars in the Winter sky from those we see in the Summer sky.  

What is ORBIT?

400

The stars are dimmer than the Sun because of this.

What is "they are further away than our star (the sun)?"
400

This is the reason that the Sun appears to move across the sky each day, the Moon appears to move across the sky each day/night, and the stars appear to move across the sky each night.

What is "Earth rotating on its axis?"
400

The Moon is considered a THIS because it orbits around a planet.

What is a SATELLITE?

400

This is located between Mars and Jupiter. 

What is the ASTEROID BELT?

400

Constellations and stars can only be seen during THIS.

What is NIGHTTIME?

500

This is the difference between revolution (orbit) and rotation.

What is: 

orbit: moving around another object

rotation: spinning on an axis

?

500

This is why astronauts weigh less on the Moon than on Earth.

What is, "the Moon has less gravity than Earth?"
500

This is how long it takes the Moon to orbit Earth.

What is a month or a MOONTH?

500

This is a list of the planets from closest to the Sun to furthest away from the Sun.

What is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune?

500

When a star dies, it can end in an explosion called this.

What is a SUPERNOVA?

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